Hi guys. I have spent the last hour or so reading through the entire three pages of this post and I must say it is quite amazing. Espcially mad scientist he is extremely good at coming up with theories. My theory to add to all of this is as follows. "Honor Spren" is the term used to refer to all ten of the spren that grant Surgebinder powers. It itself is not a specific type of spren but a collective term. Basically we dont know the name of the type of spren that Syl is. Yes she is an Honor Spren, an Honor Spren being a Nahel Bond Spren that grants surgebinding powers. Shallen bonded with a Truth Spren giving her Soulcasting and one other power, truth Spren are one of the ten types, which makes sense since truth can be an aspect of honor. Continuing with my theory I suggest that there are Nahel Bond spren for Voidbinding. Basically the Nahel Bond is a link between a spren and its user(or however you want to word it)and can manifest as Honor Spren in Surgebinding or as Odium spren Voidbinding. If the secongd part of my theory is wrong and Nahel Bond spren are what I am theorizing Honor Spren are then I am still sticking to the first part where Honor Spren is a collective term. This fits in with the book because nobody uses the term Nahel Bond spren in the text, so we wouldnt have two terms for the same thing.